diff --git a/nibabel/tests/test_data.py b/nibabel/tests/test_data.py
index 22ebbc9d9..511fa7f85 100644
--- a/nibabel/tests/test_data.py
+++ b/nibabel/tests/test_data.py
@@ -23,11 +23,11 @@
     get_data_path,
     make_datasource,
 )
-from .test_environment import DATA_KEY, USER_KEY
+from .test_environment import DATA_KEY, USER_KEY, with_environment  # noqa: F401
 
 
 @pytest.fixture
-def with_nimd_env(request, with_environment):
+def with_nimd_env(request, with_environment):  # noqa: F811
     DATA_FUNCS = {}
     DATA_FUNCS['home_dir_func'] = nibd.get_nipy_user_dir
     DATA_FUNCS['sys_dir_func'] = nibd.get_nipy_system_dir